26 replies to this topic

[spi-bwk]

Hi all,

I have tried the search engine but to no avail:

I was wondering whats involved in fitting a straight cut box so that I can get that 'whirring' sound I so love.

Anyone know what bits I need to buy (there seems to be loads of different parts/options) and how hard it is to fit start to finish?

Thanks in advance

Craig

[joel93]

you can by them from mini sport for about £700

[wmc1]

I believe it's the straight cut transfer (drop) gears that make that noise.

[ace01]

I believe it's the straight cut transfer (drop) gears that make that noise.

Staight cut gears will make the whinning noise until you change into fourth. Straight cut drop gears will make the noise all the time. That's all very well for around town, but on a motorway you may be grateful for the relative quiet!

Minispares, Minisport et al sell straightcut gears. Assembly of the box is not too hard if you follow the Haynes manual. Complete boxes are around the £700-800 mark I think.

Straight cut drops are cheaper at about £250 and much easier to fit.

[liirge]

I believe it's the straight cut transfer (drop) gears that make that noise.

Staight cut gears will make the whinning noise until you change into fourth. Straight cut drop gears will make the noise all the time. That's all very well for around town, but on a motorway you may be grateful for the relative quiet!

Minispares, Minisport et al sell straightcut gears. Assembly of the box is not too hard if you follow the Haynes manual. Complete boxes are around the £700-800 mark I think.

Straight cut drops are cheaper at about £250 and much easier to fit.

Finally, someone else who uses the et al.

[shed]

Straight cut drops are cheaper at about £250 and much easier to fit.

this something you can do at home without specialist equipment?

[Guess-Works.com]

Anything is a home job given the correct tools and aptitude...

but the easiest way to change drop gears is to remove the engine...

[Stevee]

you can by them from mini sport for about £700

Really?

not shooting them down or nothing but ive heard such bad things about there gears and alot of there other parts lately of mates

i do buy stuff off them but alot of there own brand i don't touch.

[samsfern]

just the drop gears make a sweet noise, their a bit cheaper than a straight cut box too. The drop gears tend to be louder than the gearbox, as the gearbox is submersed in oil which dampens the noise.

Also, they really arent as loud in the car as people who have probably never had them fitted make out. Mine really arent that noisy in the car, their too noisy in the car on the motorway either, i normally cruise at 4-5,000rpm, and can still hear the radio, and just about have a conversation with the passenger at 60mph. Yet people can still hear me coming from quite far away

Edited by samsfern, 11 February 2011 - 07:04 PM.

[tangerinebean]

Can i ask what is the benefit of using stright cut transfer gears?

Instead of buying a straight cut box?

No sarcasm, i genuinely don't know

[samsfern]

no sideloading, so the idler gear doesnt wind its way through the transfer gear casing, if you get what i mean, also reduces the amount of power loss through the transmission. You could use both, gearbox and drops if you wanted.

[adam_93rio]

paying £700-800 for a straight cut box sounds rediculous. especially from mini sport, get one off ebay for £450, theyre great quality


any straight cut gears will make that noise too, dont beleive people saying its just drop gears etc

[tangerinebean]

OK, yea i get it, so if you were starting on a gearbox build with minimal funds the straigth cut transfers are the place to start, and then you could save up for the rest of the gearset?!

A small budget improvement on transmission.

[adam_93rio]

as the gearbox is submersed in oil which dampens the noise.

not quite sure your wording is brilliant with this, drop gears are still in a gearbox

[samsfern]

as the gearbox is submersed in oil which dampens the noise.

not quite sure your wording is brilliant with this, drop gears are still in a gearbox

yes i know, im not very good at explaining things, lol