Search found 54 matches

by doc knutsen
Sun Jan 24, 2016 9:48 pm
Forum: Motorsport Forum
Topic: HTP pre 1966 5 speed box etc
Replies: 2
Views: 2871

Re: HTP pre 1966 5 speed box etc

A five-speeder would stand no chance for an HTP, with the FIA having "interpreted" the regulations and come up with even the four-speed JK box being illegal, despite the fact that it was run by absolutely all Imps racing to FIA Group 2 in period. Apparently, the transmission has to have synchro enga...
by doc knutsen
Tue Dec 22, 2015 7:15 pm
Forum: Motorsport Forum
Topic: Season's Greetings
Replies: 3
Views: 2881

Season's Greetings

Image

All the best from the Norwegian Impers, aiming to keep con rods well inside crankcases in 2016!
by doc knutsen
Thu Jul 23, 2015 9:28 am
Forum: Motorsport Forum
Topic: To charge or not to charge
Replies: 14
Views: 7404

Re: To charge or not to charge

Wonderful amount of knowledge on this forum, I am truly grateful for all assistance! In compensation, I shall try to goad Matt into providing links for more in-car shots from our Imps. Our next outing is at our local Rudskogen track,in three weeks time. The track was extended in 2011 and features th...
by doc knutsen
Wed Jul 22, 2015 8:23 am
Forum: Motorsport Forum
Topic: To charge or not to charge
Replies: 14
Views: 7404

Re: To charge or not to charge

Thanks fellers, I really appreciate your comments and suggestions! As you can tell, of all the things I am not, an automotive electrician is towards the top of the list... To Noddy specifically, I would like to know more regarding the use the two large spade terminals at the alternator. The ignition...
by doc knutsen
Tue Jul 21, 2015 8:17 am
Forum: Motorsport Forum
Topic: To charge or not to charge
Replies: 14
Views: 7404

To charge or not to charge

Ran into a little head-scratcher last time out with the Imps, in that mye car stopped charging, yet I cannot find anything wrong. The car is fitted with an alternator, and the wiring is very simple as this is a race car. For two seasons, the alternator has worked perfectly, but all of a sudden... Th...
by doc knutsen
Mon Sep 29, 2014 6:16 pm
Forum: Motorsport Forum
Topic: Racer eating distributors: rotors and caps?
Replies: 43
Views: 26049

Re: Racer eating distributors: rotors and caps?

What a lovely way to end the season ! I will look forward to seeing your in car footage in 2015. If you decide to stay with the Dellorto carbs their is a mail order website called "green spark plug company" they stock dellorto parts and post all over the world cheers Andy Thanks for the tip, will c...
by doc knutsen
Sun Sep 28, 2014 10:18 am
Forum: Motorsport Forum
Topic: Racer eating distributors: rotors and caps?
Replies: 43
Views: 26049

Re: Racer eating distributors: rotors and caps?

News update: We enjoyed a very fruitful day of testing yesterday, at long last. Both cars ran sans problems all day, and we even used one session for swapping cars, ie Matt got to drive the yellow one, while I had a go in his blue car. Matt was over the moon over my car, he says it handles beautiful...
by doc knutsen
Wed Sep 24, 2014 6:29 pm
Forum: Motorsport Forum
Topic: Racer eating distributors: rotors and caps?
Replies: 43
Views: 26049

Re: Racer eating distributors: rotors and caps?

Reading through the posts I think credit is due to all who posted. A number mentioned the pump/dizzy drive as the possible culprit, myself included very early on in the discussion. Pete Richards You are right, of course. Many thanks to all those who cared enough to post helpful suggestions, much ap...
by doc knutsen
Tue Sep 23, 2014 5:53 pm
Forum: Motorsport Forum
Topic: Racer eating distributors: rotors and caps?
Replies: 43
Views: 26049

Re: Racer eating distributors: rotors and caps?

ImpManiac wrote:^^ Not my diagnosis! Andy "Hillmanator" Jones got it spot on. :wink:

IM 8)
Oops, sorry about that! Credit where due, and all that. Thank you Mr Hillmanator, Sir!
by doc knutsen
Sun Sep 21, 2014 4:47 pm
Forum: Motorsport Forum
Topic: Racer eating distributors: rotors and caps?
Replies: 43
Views: 26049

Re: Racer eating distributors: rotors and caps?

I had a similar problem once, drove me round the bend. in the end i change the bronze oil drive as the offset drive slot had been machined in the wrong position. Simple test is slacken off the dizzy take the plugs out and crank the engine over, if you have a clock guage then set it up on the side o...
by doc knutsen
Mon Sep 01, 2014 8:33 pm
Forum: Motorsport Forum
Topic: Homologation papers for twin 40's
Replies: 3
Views: 2763

Re: Homologation papers for twin 40's

Hi from Malta, Just a quick question; Do FIA Homologation papers exist for an Imp running twin Weber 40 DCOE carbs? Best regards, Bob. Imps were run in Group 5 in 1965-1969, and there was almost complete freedom with regard to engine specs. Group 2 came in for 1970 in the UK, and inlet and exhaust ...
by doc knutsen
Sun May 18, 2014 8:00 pm
Forum: Motorsport Forum
Topic: Racer eating distributors: rotors and caps?
Replies: 43
Views: 26049

Re: Racer eating distributors: rotors and caps?

We've tried several different rotor arms, but by far the most reliable has been Swiftune's variant: http://www.swiftune.com/Product/669/rotor-arms.aspx (the long one in the picture) Well there's no end to the fun and games...removed the oil pump this afternoon, and there appears to be nothing wrong...
by doc knutsen
Mon May 12, 2014 8:54 pm
Forum: Motorsport Forum
Topic: Racer eating distributors: rotors and caps?
Replies: 43
Views: 26049

Re: Racer eating distributors: rotors and caps?

Also check the the crank pulley is fully on and not binding on a displaced Woodruff key allowing the tuffrided oil gear (worm) to move back and forth on the end of the crank...which in turn could make the oil pump gear oscillate in sympathy? Clan004 Many thanks to all who have offered helpful sugge...
by doc knutsen
Tue Apr 01, 2014 8:14 pm
Forum: Motorsport Forum
Topic: Jack Night five speed
Replies: 7
Views: 5137

Re: Jack Night five speed

Off the top of my head and a quick glance at Doug Nye's Cooper tome. There was no such thing as a Formula 2 Tyrell. Ken Tyrell ran what were in effect the works Cooper Formula 3 cars in the first year of the 1000cc. pushrod Formula 3; 1964. These cars used a BMC A Series based engine and a Jack Kni...
by doc knutsen
Mon Dec 16, 2013 9:11 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

If you read my note its in reference to the BDA, which is the engine in question. When Baldwin raced his mini it was a BDA, Estimated power was around 135hp. Im pretty certain imps at 998cc had nowehere near that power. However if someone can produce genuine dyno results then its a change of opinio...
by doc knutsen
Sun Dec 15, 2013 8:16 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

The BDA had nowhere near that HP :) Oh yes, they did. The engines in question are, of course, BDHs, not BDAs. David Enderby's BDH, as fitted to the Karmann Ghia clone after he abandoned the 1120 Imp engines, was dynoed at 192 BHP. Unfortunately, the engine had no torque, it was all top end. In 1972...
by doc knutsen
Wed Dec 11, 2013 9:15 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

Lars Hagermark(DJH705) wrote:
doc knutsen wrote:...this was the former Chrysler Sweden Gr 2 racer
Was that the one that former ABBA-drummer Tommy "Slim" Borgudd was driving here in the early or mid 70's?
Yes indeed, the very same. Sold to Mats Warg of Falun, and then to me in 1980.
by doc knutsen
Wed Dec 11, 2013 5:29 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

http://i1054.photobucket.com/albums/s481/PiersPhillips/1467363_10202884949988085_593550952_n.jpg Dr Enderby Anymore information on this little car? What kind space frame is it? It is DE 1, the first Maguire Imp made for my colleague David Enderby. It was never right, and ended its UK career against...
by doc knutsen
Sun Sep 29, 2013 9:27 am
Forum: Motorsport Forum
Topic: Oil cooler pipes
Replies: 5
Views: 3114

Re: Oil cooler pipes

I think they are 1/2 BSP, and you can get the oil coolers with those fittings. You might want to consider converting to the Dash fittings on a race car. Use Aeroquip or similar, -10 ("dash ten") is the size to use. A bit expensive, but once fitted, there is one less thing to worry about. And, of co...
by doc knutsen
Wed Sep 18, 2013 4:53 pm
Forum: Motorsport Forum
Topic: Goodwood Revival
Replies: 4
Views: 2932

Re: Goodwood Revival

Top job - well done. I wrote to Lord March 18 months ago with a view to do something at Goodwood for the Imp 50th, a track display or static display of cars and perhaps even a car or 2 competing, but the team who organise the event have yet to respond. I believe that some special parking had been a...
by doc knutsen
Tue Aug 06, 2013 8:36 pm
Forum: Motorsport Forum
Topic: Silverstone classic?
Replies: 5
Views: 3332

Re: Silverstone classic?

Thanks Doc Knutsen, just one more question, do you run with fiberglass doors, bonnet and boot? Hi Andy, FIA Period G regs are close to FIA Gr 2 regs as of 1971, which means that Chrysler had homologated GRP bonnets and boots, so these are OK, but doors must remain steel. The doors may be lightened ...
by doc knutsen
Mon Jul 29, 2013 9:16 pm
Forum: Motorsport Forum
Topic: Silverstone classic?
Replies: 5
Views: 3332

Re: Silverstone classic?

Just returned from ace weekend at silverstone classic and was just wondering if anybody had ever thought about entering an imp in the new fugi film Touring car championship run by the HSCC? just had a quick look at the regs on the hscc website basically says class is open to any period touring car ...
by doc knutsen
Mon Jul 15, 2013 8:18 am
Forum: Motorsport Forum
Topic: Scandinavian Imps at Velodromloppet (video)
Replies: 11
Views: 6842

Re: Scandinavian Imps at Velodromloppet (video)

Cold and or wet can suit Imps quite well though it does also suit the Minis. Shame that cars have to be fia standard - we wouldn't get away with our HRSR spec Imps then! Cheers - Simon Och, no problem with on-track cold and wet...it's the apres-track that is the worry! It is not unusual to see nigh...
by doc knutsen
Sun Jul 14, 2013 9:00 pm
Forum: Motorsport Forum
Topic: Scandinavian Imps at Velodromloppet (video)
Replies: 11
Views: 6842

Re: Scandinavian Imps at Velodromloppet (video)

Looks like you have great tracks for small engined cars. Any races for upto 1300cc GT's? Pete Richards GTs and saloons run together in Scandinavia. But you have to have HTP documents, and run to FIA Period F or G specs. Agree with what Matt said, Vaaler is a super circuit, with no stop-go parts at ...
by doc knutsen
Thu May 23, 2013 8:13 pm
Forum: Motorsport Forum
Topic: Good Imp Racing news from Norway! (video)
Replies: 22
Views: 13453

Re: Good Imp Racing news from Norway! (video)

I think George Bevan used the narrow springs inside the normal ones to achieve some sort of progressive action. On some occasions anyway. The rightmost one is an 800 racing. Sorry I don't know specs for the smaller one. http://i129.photobucket.com/albums/p231/djh705/IMG_0660_zps5f97c847.jpg Thanks ...
by doc knutsen
Mon Dec 03, 2012 10:46 pm
Forum: Motorsport Forum
Topic: Girling 14LF alternative
Replies: 6
Views: 3694

Re: Girling 14LF alternative

My Gr 2 racing Imp back in 1978 used a set of Triumph Herald f callipers, these were iron and a bit heavier than the alloy Girling units but a lot cheaper - and they fitted straight onto the 1/4" steel adapter plates that Hartwells provided for me (similar to the Chrysler Comps ones I'm sure). These...
by doc knutsen
Sun Dec 02, 2012 7:59 pm
Forum: Where are they now
Topic: Norwegian Imp ?
Replies: 5
Views: 1386

Re: Norwegian Imp ?

Hi Alan,

The Imp looks familiar, I seem to remember purchasing that very car from the district of Surnadal in Norway in about 2006. It had been off the road for some years and on returning it to base it was found to be too rusty to save so was broken up for spares.

Regards,
Fredrik
by doc knutsen
Tue May 15, 2012 5:38 pm
Forum: Motorsport Forum
Topic: Clutch release
Replies: 19
Views: 24274

Re: Clutch release

http://www.youtube.com/watch?v=FO18fgGxHmE&feature=youtu.be Well, it worked in the end! My brand new FIA Period G race Imp finally hit the track last week-end, having gotten its HTP paperwork in late March. And the clutch now works sweetly, absolutely no bugs at all. First race of the National Champ...
by doc knutsen
Sat Aug 27, 2011 11:42 am
Forum: Motorsport Forum
Topic: Clutch release
Replies: 19
Views: 24274

Re: Clutch release

Well it's sorted, after numerous blind alleys. Thanks to a phone call to an ever-helpful David Weedon, Matt and I realised what we had been missing as far as getting our pair of race Imps into operating modus... Also would like to point out that good old Malcolm Anderson managed to get a slave pump ...
by doc knutsen
Tue Aug 09, 2011 6:53 pm
Forum: Motorsport Forum
Topic: Clutch release
Replies: 19
Views: 24274

Clutch release

Due to HTP issues and a long delay in getting the latest engine built for my son Matt's Bevan-inspired car, our pair of racing Imps is only now about ready for the second half of the Scandinavian historic racing season. However, we have run into a clutch release issue which has us stumped... Matt's ...
by doc knutsen
Sun May 01, 2011 9:53 pm
Forum: Motorsport Forum
Topic: RIP Ratzenberger and Senna da Silva
Replies: 13
Views: 3826

Re: RIP Ratzenburger and Senna

Would be nice to see Roland's family name spelt correctly, too. :(
by doc knutsen
Sun Feb 13, 2011 8:29 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

Duk wrote:Interesting stuff Doc, will have a look through that site :) I didnt mean to sound like you didnt know what you were talking about if it came across that way Im just happy to learn!
Ash
No offence taken, I am too old for that. :D
by doc knutsen
Sat Feb 12, 2011 9:19 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

I wouldn't exactly say a hyabusa engine is low powered :lol: Im not even pretending to know what Im talking about (apart from I've built my own) but have you actually built one yourself and successfully tested and raced it Doc? Surely an ariel atom with its curved tube shouldnt work well then, or d...
by doc knutsen
Sat Feb 12, 2011 6:20 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

[quote="Megapin"]Thanks for your chassis design insight doc knutson.! Wish I'd spoken to you before I designed any of my cars. Davy Sorry if I upset you. But when you decide to publish your design on a world-wide forum, you must expect to face some critics. ps. hoop brace is removable and is not in ...
by doc knutsen
Fri Feb 11, 2011 7:32 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

Engine bay with no triangulation...and curved tube as structural chassis members? Upsetting a few of the basics of frame design, there. And why on Earth put the spring/damper units so high up? Center of gravity too low, maybe?
by doc knutsen
Sun Sep 12, 2010 6:30 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

Rawlson panels now ready rear wings £300 a pair and complete front £400 contact Marcus on 07780967692 or me on 07515533742 or PM me via club site col What size of wheel (Front/Rear) can you run with something like these ^^? When we ran with Rawlson panels like these, they would accommodate 8"x13" f...
by doc knutsen
Wed Aug 18, 2010 8:03 pm
Forum: Motorsport Forum
Topic: Jack Knight 5-sp dogbox
Replies: 2
Views: 2487

Jack Knight 5-sp dogbox

Does anybody have a sectioned drawing of the Knight 5-speed dog box? I have one of those boxes, built by David Weedon a few years ago, and I am assembling it and sticking it in one of our Imps in order to carry out some gear ratio evaluations with the 22" Avon ACB10 tyres that we are committed to. H...
by doc knutsen
Mon Aug 16, 2010 9:29 pm
Forum: Motorsport Forum
Topic: Bevan replica debut- video
Replies: 18
Views: 3711

Re: Bevan replica debut- video

Great! As said, that Capri was rapid!! The Capri is the very same car that was tested in several of the UK magazines in late 2008. It was built, in the UK, as a replica of the Broadspeed Capri which was run in the BTCC in 1973, until its demise at the British GP meeting at Silverstone. This was the...
by doc knutsen
Sun Aug 15, 2010 10:24 pm
Forum: Motorsport Forum
Topic: J Knight set
Replies: 18
Views: 4684

Re: J Knight set

Kristian Required ratios will depend on the rolling radius of your tyres, the number of revs your engine will allow and the length of the longest straight. So they will be different for a car running 80 profile historic crossplies compared to someone running low profile slicks, all else being equal...
by doc knutsen
Wed Aug 11, 2010 5:27 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928624

Re: Spaceframe Imps

hi all new to this forum been following this excellent thread for a while !! and i really want to do a full space frame imp does anyone know how many metres of cds steel i will need roughly ? i was thinking 75 metres ?? too much ? jon Get the weight of a bare tubular frame of a design close to what...

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