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Post by BigMark on Feb 26, 2005 4:35:37 GMT -5
Hi all, so I have been looking at ebay again can someone tell be if these hubs/brakes are what I need for the front, (going for disc front mini fin drum rear) Ebay number 7956049541 What sort of money should I be looking to pay if they are ok?? quick help would be grate as they go out soon. cheers Mark
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Post by Terrapin on Feb 26, 2005 7:59:41 GMT -5
You can certainly use these Mark - All depends on the condition - looks like your getting the uprights,hubs, brakes and calipers for your money. New, this lot would cost circa : uprights - £80 each new at moment calipers £50 each from UK brakes Discs can be bought for a tenner each hubs and bearings around £35 each (asembly per side)
Check the minisport website and Avonbar etc...
I'll let you do the maths.
watch those calipers though - are they just painted to make them look good?
Note the mini discs are fractionally smaller in diameter than the metro ones
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Post by BigMark on Feb 26, 2005 8:04:02 GMT -5
Many Thanks Rob, I was looking for the solid smaller discs to keep the unspung weight down as much as I can. Keep the fingers crossed PS feel like knocking up another pedal box like yours ;D
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Post by MiNiTiCi on Feb 26, 2005 12:01:43 GMT -5
Hi Mark, I had a look at the Mini hubs, discs & calipers on e-Bay.. These are the early Mini Cooper 7 inch type rather than the 7.5 inch Mini Cooper 'S' versions. Apart from being 0.5 inch larger diameter, the 'S' brakes have larger calipers and take the drive flanges which take the larger dia. stub axle (CV joint). The Cooper and Cooper 'S' discs (and drive flanges) cost considerably more than the tenner that Rob mentioned (you can get the later 8.4 inch disc for £10). On historic Formula Fords the Cooper calipers are usually fitted on the rear and 'S' calipers are fitted at the front, albeit using different discs. If you want to keep the unsprung weight to a minimum, companies such as MiniSport, make billet alloy calipers which user machined down 8.4 inch discs (so that the discs can fit 10 inch wheeled Minis). Unfortunately these calipers are a wee bit expensive! What diameter of front wheels are you going to fit to your Terrapin? I suspect that the (readily available) 8.4 inch discs/hubs/drive flanges could be fitted with Cooper 'S' calipers and the discs trimmed to 7.5 inches - if you are going with 10 inch dia. wheels. Update Sunday 27th Feb - I have now checked the combination of Cooper 'S' calipers with cut down 8.4" discs - unfortunately this will not work as the 'S' caliper/disc sits closer to the hub compared to the later 8.4" disc. Looks like the options for 10" wheeled cars is all Cooper 'S' discs/drive flanges/calipers or billet alloy calipers/later drive flanges and cut down 8.4" discs or indeed Mini drum brakes. Doug
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Post by BigMark on Feb 26, 2005 12:11:41 GMT -5
Yes I am looking at 10" wheels As my Terrapin is being built on a budget (all be it a sensible one) I could not justify the costs of the billet calipers. So are you suggesting going for the later metro type setup??
I was trying to stay with solid discs rather than vented due to weight but by all means suggest away, I need all the help I can get.
I asked the ebayer about the condition of the hubs etc and this was the response.....
Ive never used the brakes but just painted them up a long time ago, still good though. visually everything looks in working order but as ive never used them i dont know on the condition of the piston seals. visually the bearings look good as well and the discs run nicely through the calipers.
For £50 ish I thought they looked worth it, and even more based on Robs list of costs but all opinions welcome and infact needed!!
Mark
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Post by MiNiTiCi on Feb 26, 2005 12:45:09 GMT -5
Hi Mark, Try not to go for the Metro Hub - it is slightly different from the Mini, also the Metro drive flange and disc is different from the 8.4" Mini disc (different threads and I think the offset is also different). I would go for 1984 onwards Mini hubs with 8.4" discs, Mini Cooper 'S' calipers with machined down 8.4" Mini discs - These should fit the 10 inch wheels. Tomorrow I will have a rummage in the garage and see if this set up fits (I should have all the bits somewhere). Update Sunday 27th Feb - I have now checked the combination of Cooper 'S' calipers with cut down 8.4" discs - unfortunately this will not work as the 'S' caliper/disc sits closer to the hub compared to the later 8.4" disc. Looks like the options for 10" wheeled cars is all Cooper 'S' discs/drive flanges/calipers or billet alloy calipers/later drive flanges and cut down 8.4" discs or indeed Mini drum brakes. I have been looking at using motorcycle calipers on Mini hubs as these are very light. I have taken some pictures of an old single pot (Honda I think) caliper adapted to fit a Mini hub and 7.5" Cooper 'S' disc I was thinking of using this setup on the rear. Doug
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Post by BigMark on Feb 26, 2005 12:59:44 GMT -5
Cheers Doug, Please treat me like the mini mechanicals idiot that I am, I have an A+ engine in the work shop that I will be working on (and know quite well) but as far as the rest of the mini bits I have never even held them so please feel free to offer any advice and pics you can. I have to say if at all possible I would like to stay with an off the shelf setup for ease of spares availability. Cheers Mark
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Post by Jawfish on Feb 26, 2005 14:20:52 GMT -5
Hey Mark nice to know I'm not the only mini mechanical idiot on the forum. For my build I've pick up 4 "8.4" disc set-up to rebuild. For my build I'll be using 13 inches wheels. 8 inch wide in the front and 10 in the back.
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Post by BigMark on Feb 26, 2005 14:24:21 GMT -5
Why does everyone seem to go for discs all around, is it not overkill for such a light car??
I am still wondering about these smaller discs from ebay, looks as if it may be a good deal if I dont mind the smaller diameter discs.
I must admit I have not made any major choice about wheel size so if I do end up going for bigger dics it is just the weight penalty to consider.
Any thoughts on them Jawfish?
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Post by MiNiTiCi on Feb 26, 2005 14:36:33 GMT -5
Thanks for fixing the pictures Fred, - I think I see where I went wrong! Mark - Mini drums are probably not too bad on a single seater - they are a real pain on a roadgoing Mini - always needing adjustment an never pull the same way twice! The great advantage of discs is that they are self adjusting. Another advantage is that you can run the stronger 'S' type outer CV joint stub axles. That said - I know of one hillclimb & sprint Jedi (with Yamaha R1 power) which still runs rear Mini drums (I know this 'cos I had to adjust his brakes at a sprint last year - un-surprisingly I had a Mini brake adjusting spanner in my tool kit - you never know when Mini tools will come in handt) Doug
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Post by Jawfish on Feb 26, 2005 15:01:58 GMT -5
My choice of wheel diameter has to do with the fact that the 10" tire selection is limited here on N. America.
As for disc all around, well I'm not a big fan of drums, but I must admit that my current choice might be a bit overkill. Smaller disc set-up at the back might be more sensible. Here we have a 2-3 20 minutes practice sessions before having our go at our timed 3 laps sprints, so I do want something that will endure those 15-20 minutes.
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Post by MiNiTiCi on Feb 26, 2005 15:25:19 GMT -5
Fred/Mark, Re. 10" race rubber - I note that Hoosier make some reasonable sized 10" slicks in nice soft compound (R25A). www.hoosiertire.com/rrtire.htmI have been using Hoosier slicks on my Hillclimb & sprint single seater for the past 5 years. My current set of R25A slicks have lasted 3 seasons but will need replaced for this year. (I am using 13 inch sizes). When I ran the Mini engine I got a lot of rear wear, on the inside edges, probably due to the weight at the rear (and the fact that I did not have a very sophisticated rear suspension - all Mini arms - just with rod ends fitted). Since I converted to Kawasaki power and 'proper' FF1600 hubs/suspension, the wear is a lot more even. According to spectators, the car no longer looks like it is trying to rip off the tyres! Doug.
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Post by BigMark on Feb 26, 2005 15:28:20 GMT -5
Cheers Doug Well after having a good look around I am going to go with the 8.4" setup with 13" rubber the 7" was just too hard/expensive to get relplacement bits for.
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Post by Jawfish on Feb 26, 2005 15:59:20 GMT -5
Doug I was thinking of using something wider than 7.5 at the back, in fact my choice was for some 20X13X7.5 in the front and some 20X13X9.5 in the back. What do you guys think I am off the wall ?
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Post by Mr Locost on Feb 26, 2005 16:25:31 GMT -5
Ok, earlier on in this post I read something about bike calipers. The problem is that the blead nipple is on top of the caliper, and that makes the caliper quite tall. I don't think they would be easy to fit under 10" wheels.
Adam
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