conical pinion and gear set up, pro,s and con,s Options

[300SLR]

Now, if anyone can tell me why the Eurosport racers all use 72DP pinions with 64DP gears, that would enlighten me further!

All the Eurosports tech charts I've seen recently shows the finalists using 80 pitch spurs and pinions.
Where do they use a 72 / 64 mix?

[gascarnut]

My experience in Retro racing is that the tapered pinions are more accurately machined than most of the straight pinions, and therefore give a better mesh. There may also be some benefit when running the large amount of hypoid offset that many of us do (around 1.3mm). Certainly I can get much smoother, quieter mesh with a tapered pinion.

What I haev found when using a 72DP pinion with a 64DP gear is also in inline racing with large hypoid offsets. I have used the aluminium Sonic drag gears (64DP) with straight cut Sonic 72DP pinions, and that also gives a nice smooth mesh. The reason I think is that the effective pitch of the gear as it meshes with the pinion in a hypoid setup is smaller than true 64DP. I think the guys running 1/32 F1 Eurosports do the same for the same reason.

I have not seen anyone running 80DP pinions on 72 DP gears in an anglewinder setup, but I would think that if there is a combination of a big angle and a fair amount of offset of the pinion below the gear, the same theory would apply.

[300SLR]

What's 1/32 F1 Eurosports?
Internationally, Eurosport is a sports car class for unlimited motors, although the motor position is unlimited they are almost always low angle angelwinders
Most but not all 1/32 F1 rules require inline motor position. Different rules have different motor limitations.

[stoner]

hy Eddie. the link to abslotsport was exactly what i meant and also answered my question. thanks. even the gear sellers recomend different pitch matching. bit beyond me, that one. but i,ll tell you what doesn,t match, an 8t 48p pinion to a 50t 50m pitch sidewinder gear as i tried that combo with a 46000rpm king motor in a carrera 1/24 hot rod. john

[Russell Sheldon]

Hi 300SLR,

I hope you are having a better day today.

Kind regards,

Russell

[Mick Kerr]

but i,ll tell you what doesn,t match, an 8t 48p pinion to a 50t 50m pitch sidewinder gear as i tried that combo with a 46000rpm king motor in a carrera 1/24 hot rod. john

Hi John,
That would depend entirely on which brands and combinations of gear you are using.
I have used various combinations of these many times with sucess.
Cheers.
Mick.

[fw14b]

Martini - we are here to talk about slot cars, not nit pick grammar.
But while you are in your glass house...comma's denotes the possessive of comma. (i.e. comma's usage, the usage of a comma).
the plural of comma is commas.

Now, back to gear teeth,

Tom.

Disagree, Martini has a right to "nit pik". Posts written in that manner are a joke.!!!

[stoner]

hy Mick, i didn,t understand about pitches on gears like i do now, i just assumed it was standard 48p not the metric gear which was on it. it had a tight spot then seemed to jump a tooth. it was just an 8t pinion[brass] that i,d taken of another car. i,m interesteded in what make of 48p pinion 10t will mesh with a 37t metric gear[like scale auto ect] i,d gues it will be a 5.5 slot it. thanks in advance. wrong again fw14. you can read the question so why not try answering it, no matter how much the grammer gets on your nerves. john

[fw14b]

Not wrong at all. I, like others, find your posts laughable and pig ignorant. I have seen the odd post where you have bothered with some punctuation and grammar so it seems that you are not as poorly educated as you like to make out. Generally your posts are so poorly written that they border on the unintelligible.

[Number 27]

sory I must agree with fw14b theres relly no scuse four porn grama puncteway'shun or spellig

[stoner]

whatever!. if you can read my post, at least i hope i provide intelligent usefull information. i dont moan about minor irritating things. which is all you seem to do. you seem to dislike me intensly and i loathe to get in posts when i see your handle come up. but some how whenever i post, guess who posts next.john

[fw14b]

But it isn't "minor"!!!
The English language is already decimated by "text speak" which, incidentally is frowned upon on this forum, so we don't need your posts, which may be quite informative, decimating it even more.
If you are intelligent enough to use a computer then you are intelligent enough to be literate.
Stop being lazy or get off the forum.
For the record , I don't loathe you as I don't know you but I do loathe the way you attempt to post.

[stoner]

Double post

[stoner]

Hy Mick, I,m still interested in the metric match. Lets put it to bed now FW14b. john