Model Boat Mayhem
Mess Deck: General Section => Chit-Chat => Topic started by: ray123 on December 01, 2024, 09:10:02 pm
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Hi all I’ve been trying to track down another one of these pulley timing belts I’ve searched the numbers on the belt but got nowhere just wondering if anyone on here has used these belts or Maybe know where to look thanks for any help?
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Sorry the photos are here
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To assist further, you need to measure the belt tooth pitch (measurement from middle of one tooth to the next tooth). See diagram attached.
Here is possible match (not knowing tooth pitch), as found across the pond (US):
https://www.tme.com/us/en-us/details/t5-150-10-77za/mechanical-power-transmission/optibelt/t5-150-1077za/ (https://www.tme.com/us/en-us/details/t5-150-10-77za/mechanical-power-transmission/optibelt/t5-150-1077za/)
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Try Davall gears, they used to list tooth belt drives in their catalogues
RSSpares had them too, I also believe that Hobbies have a few listed in their catalogue too
Having had another look at that belt…..it’s not dissimilar to one off a bandsaw I replaced recently, I found mine on Amazon.
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Hi
I have used this company concerning V belts and pullies whenever necessary.
Mitsuboshi belting, Ltd. a Japanese company.
Or Misumi, a Japanese distributor of industrial products which I normally have used for Rc model building for close to 30 years up to now.
https://www.mitsuboshi.com/english/ (https://www.mitsuboshi.com/english/)
MISUMI – Configurable mechanical components – buy online (https://uk.misumi-ec.com/)
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I've bought similar toothed belts and gears from HPC Gears in Chesterfield.
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Hi try this place
Pulleys & Belts (https://www.technobotsonline.com/pulleys-and-belts.html)
https://www.technobotsonline.com/
john
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Possibly MFA Como:
https://www.mfacomodrills.com/pdfs/belts%20&%20pulleys.pdf
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Ray,
I use this engineering supply company near me for small timing belts. https://www.tces.co.uk/
You may have a similar company near you.
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Giving things a bit of thought along with the measurements you provided, you should find that the belt pitch is 5mm. This is based upon the fact that circumference of a circle is 2ᴨr (2*pi*radius) or ᴨD (pi*diameter). You measured the belt diameter as 50mm. Subtract the belt thickness (let's say it's 1mm) and you will calculate πD as 48mm * 3.1415... which equals 150.7964... This is the inner belt circumference (assuming a 1mm belt thickness). 150.7964... divided by 30 teeth (30T) gives a result of 5.02mm. This is the calculated tooth PITCH.
Additionally, you need to look closely at the shape of the teeth (tooth angle and height). From your pictures, your belt has a small recess between individual teeth. This suggests your belt is a polyurethane belt reinforced with steel/kevlar cords. I have attached a catalog page from SDP/SI (https://www.sdp-si.com (https://www.sdp-si.com)) to better explain what I am describing. Refer to Fig. 3. You will find that the belt described is a T belt.
Given all of the above, you should specifically be looking for a T5 10mm wide 30T polyurethane belt.
Hope this helps.
DM
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Ray as component shop has now taken over Mfa why not give them a ring they might well have old stock available well worth a phone call
Stav
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Possibly MFA Como:
https://www.mfacomodrills.com/pdfs/belts%20&%20pulleys.pdf (https://www.mfacomodrills.com/pdfs/belts%20&%20pulleys.pdf)
thats where i buy mine with pulley wheels to match.......no neerd for finding pitch or such as one pulley fits all belts and you can choose the hole size to fit your motors.
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If the other links don't turn anything up, I have found HPC gears to offer a comprehensive range of belts. They're not the cheapest, but are very good quality. https://www.hpcgears.com/n/products/1.pulleys_belts/pulleys_belts.php
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Thank you to all that have helped with information regarding the belt I will look into the links many thanks again all :-))