Search found 44 matches

by Roy Sims
Thu Jan 09, 2020 8:34 am
Forum: Readers Cars
Topic: Imp with Rover VVC power
Replies: 120
Views: 33811

Re: Imp with Rover VVC power

Glad you got it sorted. The extremes of suspension travel are alway dificult to sort, if the mid range has vitually zero bump steer then it will be fine. Bump steer on the rear is the most strange feeling.
Roy
by Roy Sims
Mon Nov 25, 2019 7:50 am
Forum: Readers Cars
Topic: EHK 744G - 1969 Super
Replies: 103
Views: 16391

Re: EHK 744G - 1969 Super

You could try Adams Gas, you pay a bit more for the gas but no rental, keep the bottle for as long as you like. So if you have to do more welding you have the gas.
Roy
by Roy Sims
Fri Nov 01, 2019 1:02 pm
Forum: Readers Cars
Topic: A Californian drying out in South Africa
Replies: 9843
Views: 1261203

Re: A Californian drying out in South Africa

Reverse gear is also quite a bit higher than first gear.
Roy
by Roy Sims
Fri Apr 05, 2019 11:48 am
Forum: Readers Cars
Topic: Imp with Rover VVC power
Replies: 120
Views: 33811

Re: Imp with Rover VVC power

I know few people that have had GtM's, you would have thought that by the time they got to the GTM Rossa ir would have been sorted. The drawing you show looks simple enough and from what I've seen your fabrication skills are well up to it. If the Track rod is close to the top wishbone, then yes make...
by Roy Sims
Tue Apr 02, 2019 4:28 pm
Forum: Readers Cars
Topic: Imp with Rover VVC power
Replies: 120
Views: 33811

Re: Imp with Rover VVC power

The shimmy happens when you back off the throttle, that's when things move a bit. When that set up is on a Mini/Metro a little bit of bump steer you can cope with, not that I've ever owned a Mini, Imps and Clans yes, Minis never. A bit of experimenting is the way to sort it, sounds like you have gra...
by Roy Sims
Mon Apr 01, 2019 12:32 pm
Forum: Readers Cars
Topic: Imp with Rover VVC power
Replies: 120
Views: 33811

Re: Imp with Rover VVC power

Hi Cliff, If you can draw out out could you either post it on here or PM me. Try to slow the Upright and the angles of the wishbones at ride height. The 5mm in alignment of the pickups will make a difference. The good thing is it seems to stay toe in, it can be a bit cheek clenching when it goes to ...
by Roy Sims
Fri Mar 29, 2019 5:44 pm
Forum: Readers Cars
Topic: Imp with Rover VVC power
Replies: 120
Views: 33811

Re: Imp with Rover VVC power

Hi Cliff, The caster can affect the bumpsteer but it depends on the type of suspension, most of the single seaters that I work on need 0 caster to avoid bumpsteer. I take it that you have used the Metro front on the rear and used the steering arm to get alignment, if this is so, make sure that the a...
by Roy Sims
Fri Mar 29, 2019 9:19 am
Forum: Readers Cars
Topic: Imp with Rover VVC power
Replies: 120
Views: 33811

Re: Imp with Rover VVC power

Hi Cliff, Great build, my wife reckons that the car is very Steam Punk (if you don't know just google it) Any way the over run shimmy that you describe is probably rear bump steer, I don't know what the MG/Metro suspension is like but in the first instance check for any caster on the rear uprights, ...
by Roy Sims
Sat Feb 23, 2019 1:35 pm
Forum: Motorsport Forum
Topic: 1960s 1970s IMP racer info required !
Replies: 25
Views: 3269

Re: 1960s 1970s IMP racer info required !

It's also in the 1971 Triplex Championship a bit further on in the thread. keep going and you will build a picture and you may even find some pictures, if you are lucky. The other chassis archive is hard work (it's vast) but full of info.
Roy
by Roy Sims
Sat Feb 23, 2019 8:36 am
Forum: Motorsport Forum
Topic: 1960s 1970s IMP racer info required !
Replies: 25
Views: 3269

Re: 1960s 1970s IMP racer info required !

Sorry, it was Forward trust 7th post.
Roy
by Roy Sims
Sat Feb 23, 2019 8:34 am
Forum: Motorsport Forum
Topic: 1960s 1970s IMP racer info required !
Replies: 25
Views: 3269

Re: 1960s 1970s IMP racer info required !

Hi, Have a look at Ten Tenths forum, then go to Motor Sport History, then Old Race Sheets. About 6 or 7 posts in there are some Tricentrol results showing Mike O'Dell in 10th there may be more results there and in the Special Saloon section of Chassis Archives.
Roy
by Roy Sims
Tue Feb 19, 2019 9:27 am
Forum: Readers Cars
Topic: PES 989J... "The Pest" ....windscreen fitted
Replies: 1101
Views: 309990

Re: PES 989J... "The Pest" ...airbox fettling

Hi Colin, A mate of mine just sold a 2.77 or 9 ADR CWP, this is based on Morris 1000 but with a special CWP by ADR. It may be worth a try.
Roy
by Roy Sims
Tue Feb 19, 2019 9:14 am
Forum: Readers Cars
Topic: PES 989J... "The Pest" ....windscreen fitted
Replies: 1101
Views: 309990

Re: PES 989J... "The Pest" ...airbox fettling

Hi Colin, You will need to find something in the CWP ratio department 4to1 with 22inch diameter wheels/tyres gives you 7000 revs at 70mph and 9000 at 90mph. On smaller Imp wheels/tyres (the ones that I have just measured are 21inch diameter) 7000 revs gives you 67mph. 3 to 1 CWP gives you 5500revs a...
by Roy Sims
Mon Feb 18, 2019 12:52 pm
Forum: Readers Cars
Topic: PES 989J... "The Pest" ....windscreen fitted
Replies: 1101
Views: 309990

Re: PES 989J... "The Pest" ...airbox fettling

Hi Colin, Do you have a baffle plate? If you don't I have a couple of stainless ones, I could send one for a tenner, that'll cover the postage and a pint.
As a matter of interest what final drive ratio are you running?
Roy
by Roy Sims
Thu Feb 14, 2019 5:38 pm
Forum: Readers Cars
Topic: A Californian drying out in South Africa
Replies: 9843
Views: 1261203

Re: A Californian drying out in South Africa

The standard hedgehog/loo brush cooler is effectively a couple of pipes, where you have a core there is more likelyhood of an airlock if you feed the cooler from the underside. Ideally on a competition car feed it from the top or if the cooler is on its side again hot in at the top cold out of the b...
by Roy Sims
Thu Feb 14, 2019 1:05 pm
Forum: Readers Cars
Topic: A Californian drying out in South Africa
Replies: 9843
Views: 1261203

Re: A Californian drying out in South Africa

Inlet and outlet to the top to avoid air locking.
Roy
by Roy Sims
Wed Feb 13, 2019 5:50 pm
Forum: Readers Cars
Topic: PES 989J... "The Pest" ....windscreen fitted
Replies: 1101
Views: 309990

Re: PES 989J... "The Pest" ...airbox fettling

Hi Colin, It certainly is fun to drive and the attention it attracts is unbelievable. I have dry sumped mine over the winter, but last year I selected the sprints that I diidn't think would be a problem and ran it wet sumped with no baffle. Providing you don't run slicks, a baffle plate should do it...
by Roy Sims
Mon Feb 11, 2019 10:19 am
Forum: Readers Cars
Topic: PES 989J... "The Pest" ....windscreen fitted
Replies: 1101
Views: 309990

Re: PES 989J... "The Pest" ...airbox fettling

Roy, Thanks for the advice, very helpful. I have had a look at your spaceframe, looks really nice.. Any Imp bits on it? :wink: Hi Colin, the only imp bit is a genuine Imp gear knob. I have had Imps and Clans over the years most with 998cc and Jack knight boxes, but for power and reliability you will...
by Roy Sims
Wed Jan 30, 2019 2:37 pm
Forum: Readers Cars
Topic: PES 989J... "The Pest" ....windscreen fitted
Replies: 1101
Views: 309990

Re: PES 989J... "The Pest" ...battery tray

Hi, just try to get a still air supply to the air box, the mixture leans out if you ram it. We ran ram air on the single seater and gradually taped over the inlet until it ran clean, by then we had virtually taped over the whole lot. In the end we did tape it right up and just took the air supply fr...
by Roy Sims
Tue Jan 29, 2019 4:56 pm
Forum: Readers Cars
Topic: PES 989J... "The Pest" ....windscreen fitted
Replies: 1101
Views: 309990

Re: PES 989J... "The Pest" ...battery tray

I know that I'm an interloper, but can I just advise that you let your engine draw the air, don't try ramming it. Carb engined Blackbirds don't like forced air, injection ones are fine. I tried ram air on a blackbird engined single seater and couldn't work out why we had a misfire at any point over ...
by Roy Sims
Thu Dec 06, 2018 8:45 am
Forum: Readers Cars
Topic: What did you do to your Imp today?
Replies: 758
Views: 118566

Re: What did you do to your Imp today?

Today I replaced the battery with a Yuasa item, pro tem, until I can afford another Odyssey PC680. I have unfortunately ruined my current (geddit ?) Odyssey, having let it fade away following the suspected HG problems on the way ohm (geddit Mk 2) from National. Its not had any attention since the s...
by Roy Sims
Thu Jul 19, 2018 8:14 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Handling is now fine starting to feel the car. It doesn't seem to have any nasty traits. 2nd in class to a Radical in in amongst the Single seaters at Castle Hillclimb, Cornwall. Of to Clay Pigeon Kart track for a Sprint this weekend where I have a Radical and a Spire to contend with.

Roy
by Roy Sims
Thu Jul 19, 2018 8:06 am
Forum: Sprints and hillclimbs
Topic: What happens if the bodywork comes loose at Goodwood!
Replies: 3
Views: 1831

Re: What happens if the bodywork comes loose at Goodwood!

You wouldn't want that sort of failure on Pikes Peak. He would have more a heart thumping in his chest.

Roy
by Roy Sims
Wed Jul 18, 2018 7:28 am
Forum: Sprints and hillclimbs
Topic: What happens if the bodywork comes loose at Goodwood!
Replies: 3
Views: 1831

Re: What happens if the bodywork comes loose at Goodwood!

All of that wing attached to bodywork instead of chassis? I know they are the experts but I wouldn't. The other thing, I have looked several times and wonder whether it was the rear suspension failure causing the bodywork to come adrift. The suspension was hanging off before he hit anything, at leas...
by Roy Sims
Tue Jun 05, 2018 6:44 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi Steve,
Hills and Sprints, Sprints to start off with.

Regards Roy
by Roy Sims
Mon Jun 04, 2018 12:23 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi Les and Coll, I don't mind the back end coming out when I'm on the power but turn in oversteer on the fast corners is not pleasant. I'm intending to set it up like our Ralt, that takes the fast stuff as fast as I want to go. As I said before the fiddly stuff is ok. I know how I used to like Imps ...
by Roy Sims
Fri Jun 01, 2018 2:12 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Thanks, It's fun to drive. I have had to make virtually everything as everything was ripped out, suspension wise. But it has been enjoyable. Now to get it sorted and the other one out on track. That's the Endaf Owen/Rob Knox one, that one is virtually ready to go now. I just need to put in some lega...
by Roy Sims
Fri Jun 01, 2018 1:36 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi, I have now had my Imp out on a couple of events. It goes well but needs a bit of work on the handling. It is fine on the twisty/fiddly tracks but on fast corners it is a bit tail endy. I think I know the cure, so we will see. The power is good with around 200 bhp and 164 ftlb torque before tract...
by Roy Sims
Wed Feb 07, 2018 3:07 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

The body panels are definitely Jarvis as are mine on the Maroon later orange car, the doors on the Knox/Owen car are like the Davrian ones, the doors on the Maroon/orange car are ali like on the Jedi Imp and are what Tim Duffee calls Jarvis panels.
Regards roy
by Roy Sims
Tue Feb 06, 2018 6:19 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Yep, I agree, doors are hinged different and some of the panels are a bit different.
Mike My mate had a photo of Bert Ray adjusting something on a supposedly Ray Imp that looked an awful lot like the Owen car, but that was in plain dark blue.

Roy
by Roy Sims
Mon Feb 05, 2018 8:12 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi Roy, yes that was what I meant by changed. That some cars had to be modified to meet what they should have been built to in the first place. Steve Hi Steve, That is what I'm doing to the Imp, actually both of them. They were used on circuits for years with ROPS that have never complied with the ...
by Roy Sims
Sat Feb 03, 2018 8:22 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Well in all my years spent around race cars i never knew it was ROPS they say you learn something new every day :D col The first time I saw it mentioned as ROPS is in the 2014 Blue book it may have been in 2012 or 2013 as well but I don't have them to hand to check. I have been competing since 1974...
by Roy Sims
Fri Feb 02, 2018 7:46 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi, MSA spec for Rops have not changed since 1987 (I think). It was just that certain constructors never built there ROPS to comply with the regs. Jedi were the main culprit, OMS on various cars and even Pilbeam. The ROPS on the Endaf/Knocker Imp was lacking in tube dimensions,bracing and material i...
by Roy Sims
Thu Feb 01, 2018 6:09 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi, The bike engine is already in along with the Quaife diff. I have been making the ROPS MSA legal or at least finishing what Mike started. I have sorted the front hubs so that they have one spacer not two. A fair amount to do to make it currently MSA compliant. But if you had seen the ROPS in my c...
by Roy Sims
Thu Feb 01, 2018 1:07 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi, Thanks for that, definitely the car I have in my garage. What I'm trying to do is trace it back prior to Rob Knox all the way back if I can.
Roy
by Roy Sims
Wed Jan 31, 2018 5:44 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

colin rooney wrote:Hi Roy i have messaged Ian but not heard back from him

col
Thanks, I have emailed Reg and not heard from him, but I only emailed today.
by Roy Sims
Sun Jan 28, 2018 6:20 pm
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Thanks Colin, I don't do Facebook, so if Ian Is willing to contact be Email or phone maybe we do the details over a PM,
I have looked at all of the info on the thread and seem to come up against a wall, maybe I will contact Reg Patten as well.
thanks again,
Roy
by Roy Sims
Sat Jan 27, 2018 8:38 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

OK, so another Graham. What neat features are we talking about on the Ex Rob Knox car? One thing that I do know is that the engine is really nice, all of the proper bits. The Graham Smith car was tidy at one time see the top photo above. The ROPS in both cars left a lot to be desired. Thanks for kee...
by Roy Sims
Fri Jan 26, 2018 8:09 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi, Graham Smith owned and drove the Maroon car, which I have been told was BDA powered. Seen the film. Will Arif has also driven it on occasion. As far as I know Graham Smith did not own the Blue Imp powered car, unless someone knows different. 2 cars are possibilities: the second Ray car Bob Jarvi...
by Roy Sims
Thu Jan 25, 2018 8:19 am
Forum: Motorsport Forum
Topic: Spaceframe Imps
Replies: 1340
Views: 928304

Re: Spaceframe Imps

Hi thanks, I had that info, it is more who owned it before Rob Knox and its origins. Endaf Maybe? The Maroon turned orange car, I know the Nigel Hepburn bit and little about its Graham Smith (Lyden) history, what I'm after is, were there any owners between Graham and Nigel and where it came from bef...