- Location
- Devon
Yes thanks I thought it might be, need a belt anyway
Advice on buying a mengele sh 40
- Thread starter beaconsboy
- Start date
- Location
- Devon
The belt I have is a 2970, what would I need on the smaller pulley please?
mengeleguru
Member
- Location
- Derbyshire
2900 mm. I have a few ?
- Location
- Devon
Are they for sale, how much?
I'm looking to buy the pullies and belt to speed up our mengele any idea where I could purchase. Have 240hp at the PTO .
mengeleguru
Member
- Location
- Derbyshire
We should have some , we need a new belt too
To much hp realy may burn belts out
ring me
07860 552794
To much hp realy may burn belts out
ring me
07860 552794
May be of interest to some mengele owner we have fitted the p300 belt and pulleys to a sh40n has worked very well. The distance between the center of the p300 pullys is 7.44inch wider than the sh40 hence the widened machine.
Parts and information supplied by John at alkmonton tractor's.
Parts and information supplied by John at alkmonton tractor's.
davidroberts30
Member
- Location
- pembrokeshire
@mtx.jag @Thick Farmer
Do you remember nevs sigma powered 40 going 20 years ago??
Maize pulleys and 250horse,would leave 840's behind .
Hear it screaming from miles away
Do you remember nevs sigma powered 40 going 20 years ago??
Maize pulleys and 250horse,would leave 840's behind .
Hear it screaming from miles away
traadilooar
Member
- Location
- Isle of Man
What is/will the parts availabllity be on the new bigger storm?
Thinking it would be great machine converted to reverse drive. (Far better than my mex v)
8100
Member
- Location
- South Cheshire
Be interesting see how this pan's out..
- Location
- Cumbria
Reverse drives won't give a like for like performance as trailed, this is due to the need to reverse the power shaft rotation so the flywheel go's the right way. Despite what is posted earlier, the 30 and 40 flywheels are the same dia, and the feed-rollers are the same width. The 40 flywheel is 1.0mm thicker.
Pulley permutations.
1000 pto.
220mm - 400mm = 550 rpm flywheel (30's)
220mm - 355mm = 620 rpm flywheel (40's)
275mm - 355mm = 775 rpm flywheel above 160 hp.
There is borderline between the flywheel speeds 620 and 775 @ 160-180 hp with little difference in output.
Remember the faster the flywheel, the faster everything go's, so @ 775 the pick-up needs slowed down.
Pulley permutations.
1000 pto.
220mm - 400mm = 550 rpm flywheel (30's)
220mm - 355mm = 620 rpm flywheel (40's)
275mm - 355mm = 775 rpm flywheel above 160 hp.
There is borderline between the flywheel speeds 620 and 775 @ 160-180 hp with little difference in output.
Remember the faster the flywheel, the faster everything go's, so @ 775 the pick-up needs slowed down.
At 775 are you slowing feed rollers along with the pickup?
- Location
- Cumbria
You would wondering why the p300 is running at 620 and not the 775.
- Location
- Cumbria
Pulley's and belts are expensive
775 was originally for chopping Maize with a three row header (180hp), not grass, which is why it was predominantly on reverse drive and SP units. Without crushing rollers, breaking kernals was a problem. So, by adding an aggressive liner to the flywheel housing and rasp plate in the bottom, along with slowing feed-rollers down, the unit required a faster flywheel speed to maintain blow, and to allow a faster forward speed. Latterly trailed grass harvesters were put on bigger and bigger tractors up the point the tractor power overtook the capacity of the feed-rollers. So, an increase from 550 rpm (30's) to 620 rpm (40's) came along. However there is no stopping power increases, so above 160hp in some conditions 620 is still not fast enough. The benefit of the 30's and 40's is the limits of power input are not compromised by build strength, so more power, more output without the whole thing falling apart.
Last edited:
mengeleguru
Member
- Location
- Derbyshire
More power is fine up to about 200 hp ( idealy 180 hp). But the weak link is the belt.
The new lely storm 300 P has a completely different belt & pulleys Therefore will stand up to 300 hp
We keep all the belts in stock 550 rpm , 620 rpm wide chassis etc and have never sold a replacement one for a 300 P , We keep them too. , so the improvements in the drive & pulleys speak for them selves
Just supplied belt and pulleys off a 300 P to fit an SH 40 , customer says it runs fantastic . ?
The new lely storm 300 P has a completely different belt & pulleys Therefore will stand up to 300 hp
We keep all the belts in stock 550 rpm , 620 rpm wide chassis etc and have never sold a replacement one for a 300 P , We keep them too. , so the improvements in the drive & pulleys speak for them selves
Just supplied belt and pulleys off a 300 P to fit an SH 40 , customer says it runs fantastic . ?
- Location
- Cumbria
I agree, however there are belts and there are belts. The original 30's and early 40's had an Optibelt, which was very reliable and lasted years (average size tractors were also smaller). But, even when engines were fitted to the chopper the Optiblet proved very reliable. For a period Menegle changed supplier (who will remain nameless) and experienced a quite a few belt problems, so reverted back to Optibelt. The introduction of hydraulic pto's on tractors also played a part in belt life, with early units not having a soft start. One large tractor supplier, with one particular model had several shear the tractor pto off. Pulley wrap around was also a contributor to belt life, and 30's or 40's that operated on 540pto had two 400mm pulleys, therefore the original belt lasted forever. Like many things, you could go to 'off-piste ' settings. Normal recommendation for belt tension, was just opening the spring on the tension pulley. The introduction of the Ford TW35 saw the first 30's burning belts (shredding v's off). However a few operators over-tensioned the belts and got surprisingly good results which included extended life and a better output.
More power = more torque, it's been quite a design that started in 1979, and is basically the same today, however with (in some cases) nearly 4 x the power input. I suppose it relates back to the original design criteria, a chopping unit that would operate a 3 row maize header, when at the time the average hp to process maize was 60hp per row. The Germans quoted a capacity of up to 90 tons per hour, which may have been exceeded today.
Last edited:
- Location
- Cheltenham
It’s a variation on a theme that a Swedish trailer manufacturer and the old JF. And up with over 10 years ago. Limited market as are all trailed choppers these days
- Location
- Cumbria
Interesting design, a bit different to what we have seen. Load sensing hydraulic driven feed-rollers are unique, and should allow to really optimise output. Hydraulic folding is a real advantage to keep transport width to a min (a bit like the old Jag 40's) The collection system has moved away from traditional tine band to rotor, feeding twin augers (I assume to even grass feed out to the food-rollers) chevron cutting cylinder, like the Jag SP machines. As every stock-farm now has at least one large tractor (over 130hp) I think it will all depend on the weather. If we continue to have ' catchy ' conditions, rain one day, dry the next, we maybe see a return to people doing their own silage.
Who would ever have thought we would see Forage Wagons return, so never say never.............
RCW Farm Services
Member
There’s a SH40N n for sale in the classifieds ?
wide angle PTO, hyd drawbar Yr 2001.
wide angle PTO, hyd drawbar Yr 2001.
- Tags
- deere forage wagon lely pickup