The Siren Board

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 Post subject: Siren parts
PostPosted: Mon Apr 05, 2010 2:35 am 
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Real Name: Jeb M
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Location: Rhine, Georgia
Thought I would post this since it might help someone else. I recently had to buy belts for two Thunderbolts, and here are the part numbers and prices*.

A2 series blower, (5M), three belt: part #: B48 $12.00 each
A2 series blower (4M), three belt: part #: B54 $13.95 each (price approximate, industrial only belt)
C series blower, two belt: part #: 3VX560 $15.72 each (price approximate, industrial only belt)

Rotator drive belt (all models) part #: 4L320 $5.95 each (industrial/ power equipment belt)

I recommend buying belts from NAPA or a reputable industrial belt supplier. Most auto part stores don't carry the industrial only belts and will give you the wrong one every time.

*These prices are from April of 2010, so current prices may vary.

Many of these parts are available at Mcmaster Carr. http://www.mcmaster.com/#

Here are some more parts I know off the top of my head. We'll be adding stuff as time goes on:

4M blower QD bushing (slides on shaft, pulley attaches to bushing) : Type SD, 7/8 shaft

5M blower QD bushing: Type SD 15/16 bore, bore has to be reamed out to fit since the blower shaft is a really odd size.

Tbolt flange is just a regular flange for a 3 inch pipe. They are available in both forged and cast versions. I prefer forged since it's tougher and not as brittle as cast.

Blower frame U bolt is for a 3 inch pipe and has 1/2-13 threads.

Tbolt chopper motor/model 2 taper pins: #5 X 1, available in stainless from Grainger.

Recommended grease for the blower is Shell Gadus V220. I buy it by the case and use it for the chopper tube also since it's cheap and works well.

Lifting eyebolts for the XT22, STH, SD-10, and various other Federal sirens are shouldered eyebolts 1/2-13 and about 1"-1 1/2" long. They are available in stainless steel also.

AR/AF timer parts:
Microswitches: Mcmaster Carr part #779K62 http://www.mcmaster.com/#7779k62/=vyp52s
Relays: Mcmaster Carr part #7170K14 http://www.mcmaster.com/#7170k14/=vyp5sq

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Last edited by holler on Tue Sep 24, 2013 6:21 pm, edited 5 times in total.

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 Post subject:
PostPosted: Tue Apr 06, 2010 12:58 am 
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Joined: Thu Feb 04, 2010 9:05 pm
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Location: Mobile,Al
Thanks for the info. I am restoring a thunderbolt 1000 and appreciate this so I dont have to guess a parts on a hit and miss basis. saves time and money :)


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 Post subject:
PostPosted: Tue Apr 06, 2010 2:41 am 
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Real Name: Jeb M
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Let me know if you need anything else. I'm full of useless siren knowledge and have some spare parts lying around.

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PostPosted: Tue Apr 06, 2010 5:18 pm 
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Real Name: Charles Murray
YouTube Username: kx250racer
Location: Dallas, TX
Thanks for posting that! I need at least one set, and should get a spare also.

Charles

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PostPosted: Tue Sep 24, 2013 1:08 pm 
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Real Name: Mike H
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This should be made a sticky post, so people don't have to hunt for this info. :thup:

Also, a list of bearing part numbers for the Tbolt would be a good idea, it seems I hear of someone replacing the chopper bearing on a Tbolt every few months. I don't know if other sirens "eat" bearing like the Tbolt chopper sound like it does.


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PostPosted: Tue Sep 24, 2013 2:29 pm 
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Real Name: Jeb M
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Location: Rhine, Georgia
Thunderbolts used either 87502 or 6202 bearings. A 6202 can be substituted for an 87502 if the appropriate washer or lock ring is used on the shaft to take up the extra space. Involves a lot of measuring and fitting. If in doubt just put the same kind back in that you removed.

Thunderbolts and Model 2's eat bearings because the bearings are so small and they spin so fast. Plus the Thunderbolt has the added problem of water running in past the retainer bolts and saturating both of the bearings. I use sealing washers to prevent that problem.

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PostPosted: Tue Sep 24, 2013 5:53 pm 
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I'm going to expand this thread into a "siren parts" thread. Good idea guys!


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 Post subject: Re: Siren parts
PostPosted: Tue Sep 24, 2013 6:30 pm 
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Real Name: Chris
Thanks holler!!


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PostPosted: Tue Sep 24, 2013 11:34 pm 
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I posted this awhile back.

https://airraidsirens.com/forums/viewto ... highlight=

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 Post subject: Re: Siren parts
PostPosted: Wed Sep 25, 2013 2:05 am 
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Real Name: Jeff
YouTube Username: TboltTX1, Sentry40V2T
Location: Denton, TX
If anyone needs Thunderbolt phenolic insulator blocks just send me a PM. I still have about 70.


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