Search found 23 matches

by Frednatal
28 Apr 2011, 19:33
Forum: General IOM
Topic: Checkstay - lower shroud
Replies: 6
Views: 5304

Re: Checkstay - lower shroud

A mast strut has fallen out of fashion since the raised foredeck and the advent of the mast ram. On a flat deck and deck stepped mast, a mast strut was used to brace the lower section of the mast to resist the forces of the goose neck (same function as a ram). The check stays are an alternative to ...
by Frednatal
28 Apr 2011, 16:47
Forum: General IOM
Topic: Checkstay - lower shroud
Replies: 6
Views: 5304

Re: Checkstay - lower shroud

The class rule over-rides the ERS. The height of the attachment on the mast, above the mast heel is no more than 100mm, regardless of the position of the lower limit mark. The class rules allow only one pair of shrouds. John ------------------------------------------------------ Hi John F.3.3 FITTI...
by Frednatal
28 Apr 2011, 14:07
Forum: General IOM
Topic: Checkstay - lower shroud
Replies: 6
Views: 5304

Re: Checkstay - lower shroud

Sorry but no. in F 3.4 Height of checkstay rigging point above heel point ...................... ..... 100 mm (and note it is the heel point and not the deck limit mark) John Hi John, thanks for your replay. But I do not understand. As we do not have figures to show what the words intend I am in do...
by Frednatal
28 Apr 2011, 02:49
Forum: General IOM
Topic: Checkstay - lower shroud
Replies: 6
Views: 5304

Checkstay - lower shroud

If I do not have a spreader I can use a shroud from the middle of the mast fixed on deck a little aft the mast as a checkstay?
by Frednatal
04 Feb 2011, 02:00
Forum: Events and Event Management
Topic: Distance between marks
Replies: 4
Views: 3874

Re: Distance between marks

Hi Alfonso

Your reply solve my doubt. Thank you very much.

Cheers

Fred
by Frednatal
03 Feb 2011, 04:27
Forum: Events and Event Management
Topic: Distance between marks
Replies: 4
Views: 3874

Distance between marks

I would know a reference distance between marks in the races (triangular and trapezoidal) or a medium time to do the races.

Someone can help me?

Fred
by Frednatal
01 Aug 2010, 12:39
Forum: General IOM
Topic: IOM design blog
Replies: 0
Views: 2804

IOM design blog

I'm inviting you to share yours knowledges about IOM on my new blog in English: IOM & RG 65 design.
Your discordance or concordance will be very welcome.
Only sharing knowing we will grow.

Fred

http://www.iomdesign.wordpress.com
by Frednatal
23 Jun 2010, 15:28
Forum: General IOM
Topic: CE and Sail Area
Replies: 5
Views: 3514

Re: CE and Sail Area

Hi Don

Unhappy I do not have. Would be interesting if we could have. If someone has a table of offsets and want know resistance by Michelet, inclined waterlines, Turner's Moments, righting arm and accept make the results available for all I can do the work.

Cheers

Fred
by Frednatal
23 Jun 2010, 00:36
Forum: General IOM
Topic: CE and Sail Area
Replies: 5
Views: 3514

Re: CE and Sail Area

Hi Don My site is exactly for this: share knowing. I can help and I am helped. It is exclusively technical. I had many difficults to learn about IOM and I do not like that peoples pass by the same. If you have interest in some post, call me that I translate for you. If some people believe that the s...
by Frednatal
22 Jun 2010, 00:21
Forum: General IOM
Topic: CE and Sail Area
Replies: 5
Views: 3514

Re: CE and Sail Area

Hi Don I have some data: A main sail Area = 0.34679 m² CE --> XCE = -0.1215 m YCE = 0.610 m jib sail Area = 0.2458 m² CE --> XCE = 0.1258 m YCE = 0.4760 m Jib + Main --> Area = 0.593 m² CE --> XCE = -0.019 m YCE = 0.554 m B Jib + Main --> Area = 0.426 m² CE --> XCE = -0.023 m YCE = 0.412 m C Jib + M...
by Frednatal
16 Jun 2010, 22:47
Forum: General IOM
Topic: Turner moments
Replies: 1
Views: 2752

Re: Turner moments

The program for Autocad in Autolisp language is disponible here: http://www.boatdesign.net/forums/boat-d ... post372388
by Frednatal
01 Jun 2010, 16:32
Forum: General IOM
Topic: Turner moments
Replies: 1
Views: 2752

Turner moments

I do a Turner study for my new design but as is the first time that I do this I am a little confusing in take conclusions. Can someone help me? The figures annex are from an autolisp program that I do to run in Autocad. After I prove that it is running OK I will make available here. If somebody has ...
by Frednatal
04 Dec 2009, 09:09
Forum: Measurement and Measurers
Topic: Water Free Measurement of IOM
Replies: 20
Views: 26958

Re: Water Free Measurement of IOM

Well, my friend Ademir Nicaretta, a jurassic lover of IOM, 30 years experience in naval modeling, living in Brasilia, do a IOM Hull Depth gauge v.3R and he put my IOM there. He say me: "Your IOM dont have depth!". I smile and went to see what he is doing, and I see really that by the gauge my depth ...
by Frednatal
13 Nov 2009, 00:16
Forum: Measurement and Measurers
Topic: Water Free Measurement of IOM
Replies: 20
Views: 26958

About the Transverse gauge v5. The lines of a IOM is Absolutely free unless a few dimensions to define a lenght, weight and depth, this is the appeal. Freedom. Unhappy when we have a gauge with certain measures naturally there will be a race to explore this. Notwithstanding you say that these measur...
by Frednatal
12 Nov 2009, 22:51
Forum: Measurement and Measurers
Topic: Water Free Measurement of IOM
Replies: 20
Views: 26958

Seeing the IOM Hull Depth gauge v.3R I understand that a boat whith DWL 1.00 m can have a depth more than 60 mm. You d'ont see this in the figure? If I put a hull with 1.00 m DWL in the gauge the botton of the boat stop in the stern and bow support before the real DWL is in. I see this. I must be wr...
by Frednatal
07 Nov 2009, 15:27
Forum: General IOM
Topic: LiFePO4 could this be the new wave in boat batts
Replies: 15
Views: 7235

I have some conclusions about the LiFePO4. Today I receive a e-mail from Bruce Simpson (RCModelreviews.com) about the supply of 6.7V or a bit more to servos Hitec. He says that he used 2 LiFePO4 cells in a range of Hitec servos since HS425BB through to the HS5955TG without any problem. With JR servo...
by Frednatal
07 Nov 2009, 00:03
Forum: General IOM
Topic: LiFePO4 could this be the new wave in boat batts
Replies: 15
Views: 7235

Hi Rob, I agree, but my charger can charge and balance Lixx batteries (and others). Really, was my first time to use the charger, and happened this problem. About my doubts about limit the Voltage in 6.0V and/or limit the charge capacity to obtain a final 6.0V, I saw, when the batteries are charging...
by Frednatal
06 Nov 2009, 23:44
Forum: General IOM
Topic: LiFePO4 could this be the new wave in boat batts
Replies: 15
Views: 7235

About the battery identification problem by charger, caused by low voltage (2.3V), my friend Claudio Pelarin say me to charge the battery as NiCd until reach 5.0V (controlling battery temperature) and after, change to normal charge process like Life. In 3 minutes they are with 5.0V (without any incr...
by Frednatal
06 Nov 2009, 14:42
Forum: General IOM
Topic: LiFePO4 could this be the new wave in boat batts
Replies: 15
Views: 7235

Hi Rob, well, I will use A 3003 Futaba for rudder and a 5745MG Hitec for sails on my first IOM that I am making, boths specifications give a range 4.8V ~ 6.0V to then. But, may be that this voltage are assotiated with 1.2V cells. What is the ultimate voltage that they can be submitted? My charger ha...
by Frednatal
06 Nov 2009, 00:14
Forum: General IOM
Topic: LiFePO4 could this be the new wave in boat batts
Replies: 15
Views: 7235

If I use the Life (6.6 V) for Futaba and Hitech servos (6.0 V) I need a voltage regulator or the servo accept this extra voltage?
by Frednatal
27 Aug 2009, 22:10
Forum: General IOM
Topic: Hobby King
Replies: 3
Views: 3283

by Frednatal
27 Aug 2009, 22:05
Forum: General IOM
Topic: Hobby King
Replies: 3
Views: 3283

Hi Barry

Is a 4-channel 2.4 GHz RC system very cheap. After I put this question here I discover this site:

http://www.rcmodelreviews.com/hobbykingrc2.shtml

But I still want know the opinion from who have tuis RC.
by Frednatal
19 Aug 2009, 03:48
Forum: General IOM
Topic: Hobby King
Replies: 3
Views: 3283

Hobby King

Is a RC Hobby King reasonable?
Is it durable?