Belt length change - Page 3 - Snowblower Forum : Snow Blower Forums
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post #21 of 35 Old 04-18-2018, 01:14 PM
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If getting a larger pulley for the engine side is going to be difficult, can you get a smaller dual pulley for the impeller (maybe out of another SHO model).....? Just a thought.

That's kind of what I may be doing with one of my Hondas to increase impeller speed.
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post #22 of 35 Old 04-19-2018, 02:04 AM
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Soo many posts to read through.....

Look here to get individual pulleys..
Single for transmission
Double for auger

You should be able to find what you need. I've done many custom setups without much trouble, if you end up with a 1/2 size belt legnth I'd recommend changing idler pulley size to get you to an off the shelf regular legnth belt.

https://electricmotorwarehouse.com/t...ve-fixed-bore/


This is how I ended up doing my Franken Blower project.

Ariens 24" 910962 7HP
Ariens 24" 924117 Modified Pro 342cc / 15.50 GT.. Currently Under Construction and testing trials commenced .......
Ariens 32" 924044 Modified Pro 342cc / 16.50 GT
Ariens / Troy Bilt 36" Frankenblower
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post #23 of 35 Old 04-19-2018, 02:09 AM
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Here's some pixx of my belt guide finger.




Please let me know if I can help you any further. I'm sure we can get you squared away with your project.

Ariens 24" 910962 7HP
Ariens 24" 924117 Modified Pro 342cc / 15.50 GT.. Currently Under Construction and testing trials commenced .......
Ariens 32" 924044 Modified Pro 342cc / 16.50 GT
Ariens / Troy Bilt 36" Frankenblower
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post #24 of 35 Old 04-19-2018, 10:44 AM Thread Starter
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Originally Posted by Shaw351 View Post
Soo many posts to read through.....

Look here to get individual pulleys..
Single for transmission
Double for auger

You should be able to find what you need. I've done many custom setups without much trouble, if you end up with a 1/2 size belt legnth I'd recommend changing idler pulley size to get you to an off the shelf regular legnth belt.

https://electricmotorwarehouse.com/t...ve-fixed-bore/
Thank you for the pic and the pulley reference guide. Your crankshaft is very long, while mine is short at only 1 3/8" (beyond wheel drive pulley) so the 2AK30 pulley ( http://www.electricmotorwarehouse.co...lley/cat26.pdf ) for the 1" shaft is 1/32" short of the end of the crank when the belts are lined up with the pulleys. So no drive possible. This is based upon the measurements of the 2AK30 pulley overall length (P+F) = 1 27/32" while the Ariens pulley is 1 28/32" from pulley end to end of crank. Then there is the drive portion of 1 3/8" of pulley on the crank for overall length of 3 1/4" (the Pro pulley is 1/8" longer). I don't know how much of the pulley needs to be on the crank for proper support, but I cannot make that up by moving the engine forward or the impeller housing back.

Perhaps a machine shop could cut the drive portion off the steel Ariens pulley and weld it to the cast iron pulley boss. The short boss pulleys have been the problem all along with the target setup.

Thanks for the helpful posts.

2015 Ariens Platinum 30 SHO - model 921040
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post #25 of 35 Old 04-19-2018, 01:32 PM
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Town,

I'd suggest you PM Shaw351, I think he'll definitely be able to help you with the pulleys issue.
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post #26 of 35 Old 04-20-2018, 02:23 AM
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You can overhanging / extend beyond the end of the crankshaft a little bit without any issues. I've done it on several machines and never had any issues or premature belt wear / failure.

Here is a pixx of a recent machine that I've modified and is still running beautiful.

You can also see how I made an adapter plate for the idler pulley to move it to a position that allows a regular legnth belt, not a 1/2 size one.... like 39 1/2"



Ariens 24" 910962 7HP
Ariens 24" 924117 Modified Pro 342cc / 15.50 GT.. Currently Under Construction and testing trials commenced .......
Ariens 32" 924044 Modified Pro 342cc / 16.50 GT
Ariens / Troy Bilt 36" Frankenblower
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post #27 of 35 Old 04-20-2018, 02:58 AM
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If you would rather try to change the lower auger pulley setup then you can buy a similar pulley like this one but a little bit bigger, this is too small for your application. Should be able to get it locally at an industrial supplier or bearing house. Just buy the correct QD bushing insert for your application, just measure your auger shaft diameter. Just a note to think of...... you might have to also rework the brake assembly when you change the bottom pulley.



Here's a pixx of the pulley on my custom bucket as I was fabricating it.

Ariens 24" 910962 7HP
Ariens 24" 924117 Modified Pro 342cc / 15.50 GT.. Currently Under Construction and testing trials commenced .......
Ariens 32" 924044 Modified Pro 342cc / 16.50 GT
Ariens / Troy Bilt 36" Frankenblower
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post #28 of 35 Old 04-20-2018, 08:49 AM Thread Starter
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Quote:
Originally Posted by Shaw351 View Post
You can overhanging / extend beyond the end of the crankshaft a little bit without any issues. I've done it on several machines and never had any issues or premature belt wear / failure.

Here is a pixx of a recent machine that I've modified and is still running beautiful.

You can also see how I made an adapter plate for the idler pulley to move it to a position that allows a regular legnth belt, not a 1/2 size one.... like 39 1/2"
Thanks for your information. I was not clear in my explanation earlier, the whole of the 2AK30 pulley would overhang the end of the crankshaft by 1/32", so there is no support or drive for the pulley at all.

Ariens pulley uses a 1 3/8" drive section (1 1/2" diameter) to the end of the crank and then hangs a 3/8" continuation of the drive and the 1 1/2" pulley section over the end of the crank. So there is 1 7/8" of the assembly extending beyond the crank.

It is an unusual setup.

Thanks for your help.

2015 Ariens Platinum 30 SHO - model 921040
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post #29 of 35 Old 04-20-2018, 09:15 AM Thread Starter
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Quote:
Originally Posted by Shaw351 View Post
If you would rather try to change the lower auger pulley setup then you can buy a similar pulley like this one but a little bit bigger, this is too small for your application. Should be able to get it locally at an industrial supplier or bearing house. Just buy the correct QD bushing insert for your application, just measure your auger shaft diameter. Just a note to think of...... you might have to also rework the brake assembly when you change the bottom pulley.
Here's a pixx of the pulley on my custom bucket as I was fabricating it.
Thank you for the great information. Changing that lower auger pulley from 9" to 8" would allow a target impeller rpm of 1271 rpm which would be good, and even a 8.5" pulley would allow 1197 rpm which is also good. I would need to modify the pulley brake system to accommodate the additional 1/4" of reach (or less with the smaller pulley), and a shorter belt. YSHSfan also suggested this route.

Do you have a website for the lower auger pulley that you showed as the Dodge 455590 2A5.8 B6.2 - SDS QD sheave? I have not seen a suitable pulley in my research.

Thanks again for your help and options.

2015 Ariens Platinum 30 SHO - model 921040
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post #30 of 35 Old 04-21-2018, 02:02 AM
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Closest I could find......

https://www.motionindustries.com/pro...p?sku=00699936

Ariens 24" 910962 7HP
Ariens 24" 924117 Modified Pro 342cc / 15.50 GT.. Currently Under Construction and testing trials commenced .......
Ariens 32" 924044 Modified Pro 342cc / 16.50 GT
Ariens / Troy Bilt 36" Frankenblower
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