12 replies to this topic

[rogue]

I filled the reverse box with 10w50 and have triple checked the oil level. The straight cut whine is nearly intolerable except on a full blown track cars. I also get a TON of noise from the chain and reverse box even in neutral coasting down a hill. Due the the way the reverse box is designed, I believe it acts like a bicycle "clicker" that clicks when you are coasting down the street. It is exceptionally audible even over the straight cut whine. That combined with the straight cut gears on the unit make it intolerable. I'll try and get some video tomorrow but I was curious if anyone else has had this problem with the reverse box.

Had I known it was so loud I would have fabbed up some sort of electronic reverse setup.

Anyone else experience the same?

Edited by rogue, 10 September 2010 - 04:40 AM.

[Monte Busa]

I filled the reverse box with 10w50 and have triple checked the oil level. The straight cut whine is nearly intolerable except on a full blown track cars. I also get a TON of noise from the chain and reverse box even in neutral coasting down a hill. Due the the way the reverse box is designed, I believe it acts like a bicycle "clicker" that clicks when you are coasting down the street. It is exceptionally audible even over the straight cut whine. That combined with the straight cut gears on the unit make it intolerable. I'll try and get some video tomorrow but I was curious if anyone else has had this problem with the reverse box.

Had I known it was so loud I would have fabbed up some sort of electronic reverse setup.

Anyone else experience the same?

Earplugs! I wore them 100% of the time I drove my Pro-mo Mk1...

[Knumbskull]

I filled the reverse box with 10w50 and have triple checked the oil level. The straight cut whine is nearly intolerable except on a full blown track cars. I also get a TON of noise from the chain and reverse box even in neutral coasting down a hill. Due the the way the reverse box is designed, I believe it acts like a bicycle "clicker" that clicks when you are coasting down the street. It is exceptionally audible even over the straight cut whine. That combined with the straight cut gears on the unit make it intolerable. I'll try and get some video tomorrow but I was curious if anyone else has had this problem with the reverse box.

Had I known it was so loud I would have fabbed up some sort of electronic reverse setup.

Anyone else experience the same?

Earplugs! I wore them 100% of the time I drove my Pro-mo Mk1...

Hi,
Sorry to hear your not happy with the gearbox.
Glad of your post as was considering one of these gearboxes.Whats the price inc vat if you don't
mind me asking ?
Have you any info on electrical reverse setups ? Links /etc
All the best

[rogue]

Hi,
Sorry to hear your not happy with the gearbox.
Glad of your post as was considering one of these gearboxes.Whats the price inc vat if you don't
mind me asking ?
Have you any info on electrical reverse setups ? Links /etc
All the best

Is the straight cut gears, the way pro-motive incorporated the reverse gearbox, the chain and sprockets are ALWAYS moving, so it ticks along like a bicycle would coasting and makes a hell of a racket doing so. The straight cut gear whine is so loud its nearly impossible to have a conversation unless you're in neutral.

great idea, horrible testing and execution. I paid a pretty penny for the reverse box as well before pro-motive made them standard.

If I had to do it again I would go with an electric reverse. The Quaife ATB Reverse box is insanely loud, racecar straight cut gear ear plugs loud.

Their lack of response to my emails pretty much tells me thats just the way it is.

A starter motor for reverse would be a much better solution and cause much less wear and tear on the chain and sprockets as well.

Edited by rogue, 02 October 2010 - 08:18 AM.

[Knumbskull]

Hi,
Sorry to hear your not happy with the gearbox.
Glad of your post as was considering one of these gearboxes.Whats the price inc vat if you don't
mind me asking ?
Have you any info on electrical reverse setups ? Links /etc
All the best

Is the straight cut gears, the way pro-motive incorporated the reverse gearbox, the chain and sprockets are ALWAYS moving, so it ticks along like a bicycle would coasting and makes a hell of a racket doing so. The straight cut gear whine is so loud its nearly impossible to have a conversation unless you're in neutral.

great idea, horrible testing and execution. I paid a pretty penny for the reverse box as well before pro-motive made them standard.

If I had to do it again I would go with an electric reverse. The Quaife ATB Reverse box is insanely loud, racecar straight cut gear ear plugs loud.

Their lack of response to my emails pretty much tells me thats just the way it is.

A starter motor for reverse would be a much better solution and cause much less wear and tear on the chain and sprockets as well.

Thanks for the reply,really appreciate the info.

[roofless]

The straight cut whine is nearly intolerable except on a full blown track cars.

not meaning to sound rude - but what exactly were you expecting ?

[miniQ]

erm...wait... so only in reverse? how often are you reversing this car to get annoyed about the sound lol?

[R1mini]

The chain and sprockets will always make noise regardless of whether you have an mechanical or electric reverse or not , I'm surprised you can here the chain though

Having been in a few Z cars mini's with the same engine the whine may be coming from the various drive boxes. ie transfer box, reverse box

Cheers
David

[rogue]

The straight cut whine is nearly intolerable except on a full blown track cars.

not meaning to sound rude - but what exactly were you expecting ?

I have a 4 speed muncie rockcrusher in the camaro with straight cut gears. Its not even CLOSE to as loud as the reverse box. I was expecting it to be as loud as a bike with linkage. Was not expecting full time straight cut gears even in neutral coasting down a hill its hard to talk to the person next to ya.

IMO this kit would be much better off with an electric reverse.

Edited by rogue, 15 October 2010 - 07:46 PM.

[rogue]

erm...wait... so only in reverse? how often are you reversing this car to get annoyed about the sound lol?

It makes the noise in forward, reverse, neutral, coasting, you name it. You hear the clicking of the reverse box, it sounds like bicycle sprockets when coasting. When under load its straight cut gear noise.

[rogue]

The chain and sprockets will always make noise regardless of whether you have an mechanical or electric reverse or not , I'm surprised you can here the chain though

Having been in a few Z cars mini's with the same engine the whine may be coming from the various drive boxes. ie transfer box, reverse box

Cheers
David

The chain and sprockets are about 15% of the loudness. The straight cut reverse box is 50% more and the bike exhaust is quiet in comparison.

[Rosslin Racing]

is that what that clicking is in your film? would drive me up the wall.
the car is a nice job as well.

[rogue]

is that what that clicking is in your film? would drive me up the wall.
the car is a nice job as well.

it pretty much is. Had I done this again I would have gone without the reverse box and gone electric for sure. Thank you, wish I could take credit but heritage garage in costa mesa did the swap..

Edited by rogue, 20 October 2010 - 07:34 PM.