What class will this fit into?

[jasonu]

If everyone had non competitive engines how could anybody win?
Maybe time to re read that rule

Some would be more 'non competitive' than others...

[wildman]

Wrong mate. The non comp engine rule covers ALL Bucket classes.
If it didn't then don't you think there would already be hundreds of CRF150R powered outfits?
You new guys need to PROPERLY read the rules and ask questions before you go out and possibly buy illegal or even marginal machines.

Sorry Jasonu it was three in the morning and i couldn't sleep, was being sarcastic. i think the non competition engine rule is a good one .Having spent thirty odd years running go-karts i know how out of hand things can get and i also remember when the tf100 was the top motor for a bucket sidecar. Bring back the good old days.

[jasonu]

Sorry Jasonu it was three in the morning and i couldn't sleep, was being sarcastic. i think the non competition engine rule is a good one .Having spent thirty odd years running go-karts i know how out of hand things can get and i also remember when the tf100 was the top motor for a bucket sidecar. Bring back the good old days.

No worries mate.
Not sure about bringing back the old days though. I like the way Buckets has progressed in the 20+ years I have been involved.

[Drew]

No worries mate.
Not sure about bringing back the old days though. I like the way Buckets has progressed in the 20+ years I have been involved.

I liked the way my bucket progressed in the three days it took to build it. Now if only I could be bothered tuning and using it.

[F5 Dave]

yeah see the WT thread

[Buckets4Me]

If everyone had non competitive engines how could anybody win?
Maybe time to re read that rule

Engines must be derived from non-competition motorcycles. ok ok but the RM is still out


CHAPTER 24

24 ROAD RACING - MINIATURE

24-1 The Miniature Road Racing class or `Bucket Racing’ as it is also known, shall be deemed
to include solo motorcycles and sidecars.

24-2 Motorcycles Technical:

24-2-1 Solo motorcycles shall have two engine capacity classes:
F4 2 stroke 55-100cc
2 stroke 55-125cc air cooled
4 stroke 55-150cc
F5 2 stroke 0-50cc
4 stroke 0-100cc air cooled

24-2-2 Sidecars shall have one engine capacity class:
2 stroke 55-100cc
2 stroke 55-125cc air cooled
4 stroke 55-150cc

24-2-3 The maximum capacity for rebored engines shall be:
F4 2 stroke 55-100cc - 104cc
2 stroke 55-125cc air cooled - 130.5cc
4 stroke 55-150cc – 158.09cc
F5 2 stroke 0-50cc - 53cc
4 stroke 0-100cc - 104cc

24-2-4 Engines must be derived from non-competition motorcycles. Motocross, Road Racing,
Enduro and Go Kart motors and transmission parts are not permitted. There shall be no
restriction on the make, type or design of carburettor, ignition, exhaust, piston, cam, valve
springs or cooling system except for class eligibility. All engines must be normally
aspirated except F4 4 stroke engines of less than 100cc capacity, which may be turbo or
supercharged.
F4 2 stroke engines over 104cc are restricted to carburation equivalent to a single 24mm
carburettor, F5 4 stroke engines over 53cc are restricted to carburation equivalent to a
single 20mm carburettor.

24-2-5 Fuel: See 10-17-1
Alcohol based fuel or fuel additives are prohibited.

24-2-6 Construction of Solo Motorcycles:
Miniature road racers are to be constructed in accordance with, and comply with, Chapter
10.

[gav]

Yes, dude, but there is a difference between non competition and non competitive as you typed Never mind Yow Ling was just taking the piss .... maybe try reading it slower next time, you might see the funny side ...

[haydes55]

All engines must be normally
aspirated except F4 4 stroke engines of less than 100cc capacity, which may be turbo or
supercharged.

Has anyone actually turbo'd a 100cc bucket? This I must see

[koba]

Has anyone actually turbo'd a 100cc bucket? This I must see

I know a supercharged 100 has been done. Apparently it was very disappointing.

[haydes55]

I know a supercharged 100 has been done. Apparently it was very disappointing.

My mates job is to deal with turbo's has been a specialist in turboing mainly jap cars for 4 years. Could be worth giving it a crack for a laugh Need to find me a cheap 100cc bike

[koba]

Need to find me a cheap 100cc bike

And a microscopic turbo.

[haydes55]

And a microscopic turbo.

After the F1 teams started turboing their cars, alot of motorbikes and cars went crazy making turbos of various sizes and alot of very small ones (they had turbos for MX bikes).

[Bert]

I'd go for the super charge option and stroke it; get some low end grunt and it might actually do alright; anyway what would I know, silly four strokes..

[koba]

After the F1 teams started turboing their cars, alot of motorbikes and cars went crazy making turbos of various sizes and alot of very small ones (they had turbos for MX bikes).

Right, but get your mate to do the maths (If he does actually does maths rather than just suck it and see).

A 'cheap' 100cc four stoke is gutless.

If one had a super-duper high performing 100 that is either a twin (250-4 cut in half and destoked?) or a single with 4 valve head (VT250 head on XL?) or whatever it is still only puffing out enough gas to spool up tiny weeny turbo.

There are some real small turbos available but it all starts to get complicated and certainly moves well out of the realms of cheap and easy.

There has been quite a bit said on it here before, have a search and see what you can find.

If you think you can do it go for it! BUT I encourage you to look at it in detail before you go starting it as it may end up a huge waste of time and effort.

I may post up some workings out if it helps you or anyone else (Not my smarts, thank Mr Bell).

[haydes55]

Right, but get your mate to do the maths (If he does actually does maths rather than just suck it and see).

He will need to measure an engines air flow, so I'm guessing he does the math. Just reckon that will be a cool project.