I am only thinking H36 Dimonas..... It has now been 20 years since I worked on a Grob! regards Rob
Rob Thompson 0429 493 828 On Tue, Mar 16, 2021 at 3:59 PM Ian Williams <[email protected]> wrote: > The prob with the Stemme L2400 Rob was that the oil temp valve and spin on > filter were in the way of using the original Grob pitch change system > So had to be on the other side (same as the Dimona ) > > Sent from my iPhone > > On 16/03/2021, at 5:09 PM, Rob Thompson <[email protected]> wrote: > > When we installed a L2400 as a replacement for a L2000, it was a direct > swap... just altering the length of the pitch change cable. > > If you want to use a L2000 pitch change mechanism on a L2400.... They are > just very slightly different and you may find that the prop doesn't feather > completely and may windmill a little bit. > regards > Rob > > Rob Thompson > 0429 493 828 > (Please note that my new email address is [email protected]) > > > On Tue, Mar 16, 2021 at 10:54 AM Michael Stockhill <[email protected]> > wrote: > >> Thanks, Ian. >> >> M >> >> On Mon, Mar 15, 2021 at 4:43 PM Ian Mc Phee <[email protected]> wrote: >> >>> Michael >>> >>> Some years ago we fitted a Sauer S2500 to our dimona and were able to >>> use the gear change metalwork. That engine was 15mm longer so rear engine >>> mount was shortened but the master (the bone) was moved to the cockpit of >>> firewall and mounted on standouts and the shaft was shortened. Personally I >>> wod do this simple mod to all h36 as gives more room at rear of slick 4330. >>> >>> We already had the BT Blades (rount tip) and outr STC required that (not >>> the T with point tip) >>> >>> The electric prop sure can use power and as battery gets low it slowly >>> goes coarser. In extreme case it will no longer climb. Thus with the >>> hk36R you must keep an eye on voltage and think manual suggest TURN OFF >>> ELECTRICS to save power. >>> >>> Back to the 2500 Sauer I was never happy with the cruise setting. >>> Recently I got a sliver taken off the adjust nut which brought the two >>> settings closer together. I am extremely happy with the results, not only >>> can I cruise at 90 kts to 95kts (even 100kts). The bonus is IT USES LESS >>> FUEL. The throttle is back 8mm than before. In cruise it is going along >>> at 2800rpm which is close to spot on to max torque. I think previously >>> the engine was labouring going up the hill. The higher revs are fre revs. >>> The engine loves it. >>> >>> Another on props is club has a falke which had L1700 but now fitted a >>> L2000 but have retained the original 75cm pitch (150 dia) which Scheibe >>> approve but most these days have 90cm.pitch. It climbs like a home sick >>> angel at 3000revs >>> >>> I have not answered your question >>> >>> Ian McPhee >>> +61 428847642 >>> Box 657 Byron Bay NSW 2481 Australia >>> >>> >>> >>> >>> >>> On Tue, 16 Mar. 2021, 07:44 Michael Stockhill, <[email protected]> wrote: >>> >>>> Ian, >>>> >>>> That would be great if you sent some snaps to Mike Hoffman, and copy me >>>> too! >>>> >>>> [email protected] >>>> >>>> You guys are great. >>>> >>>> M >>>> >>>> >>>> On Mon, Mar 15, 2021 at 1:23 PM Ian Williams <[email protected]> wrote: >>>> >>>>> Gidday Michael, >>>>> I may be of some help there. A few years ago I installed a Limbach >>>>> L2400 from a deceased Stemme S10 into an early Grob 109A and used the >>>>> original Hoffman prop. It was a mission as we also applied for a 1 off >>>>> STC. Which was eventually approved by the NZ CAA. >>>>> However at the time I was unaware that the approved prop for that >>>>> combination was an MT. >>>>> So I designed a system based on the Dimona H36 pitch change. >>>>> So it the dude wants some pictures of the system I can send a few >>>>> The Grob has since done about 300 hrs and no >>>>> Problem >>>>> >>>>> Best regards from New Zealand >>>>> Ian Williams >>>>> >>>>> >>>>> Sent from my iPhone >>>>> >>>>> > On 16/03/2021, at 8:58 AM, Michael Stockhill <[email protected]> >>>>> wrote: >>>>> > >>>>> > I caught up with the Taifun group when researching resurrection of a >>>>> Taifun here in the states. >>>>> > >>>>> > One Taifun owner makes many 6-8 hour wave flights. He said he >>>>> removed his MT propeller which requires electric power for unfeathering >>>>> because his batteries run too low. He installed a Hoffman on his L2400, >>>>> but >>>>> he does not have a pitch change mechanism. I expect to ask him if he then >>>>> flies with the engine windmilling, and has flat pitch for all flight. I >>>>> don't yet know the model number of his prop. >>>>> > >>>>> > Questions for the group: >>>>> > >>>>> > Are the pitch change lever and components the same on the L2400 as >>>>> on the L2000? >>>>> > >>>>> > Does anyone have a set of those components for either series engine? >>>>> > >>>>> > I am 1000 miles from my parts books. Are these parts Limbach or >>>>> Diamond/Hoffman? >>>>> > >>>>> > Thanks for your usual insights. >>>>> > >>>>> > Michael Stockhill >>>>> > Polson, MT >>>>> >>>>> >>>>> --------------------------------------------------------------------- >>>>> You are subscribed to the Dimona Owners Group mailing list. >>>>> This list is archived in public. http://waikeriegliding.com/dog/ >>>>> To unsubscribe, send email to: [email protected] >>>>> >>>>>
